/*清除元素默认的内外边距  */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
/*让所有斜体 不倾斜*/
em,
i {
  font-style: normal;
}
/*去掉列表前面的小点*/
li {
  list-style: none;
}
/*让button 按钮 变成小手*/
button {
  cursor: pointer;
}
/*取消链接的下划线*/
a {
  text-decoration: none;
}

button,
input {
  border: 0;
  outline: none;
}
.hide,
.none {
  display: none;
}
/*清除浮动*/
.clearfix::after {
  visibility: hidden;
  clear: both;
  display: block;
  content: "";
  height: 0;
}
.clearfix {
  *zoom: 1;
}
